Subsequent thermal annealing of irradiated crystals in oxygen at 600 °C for 30 min results in the color change, to yellowish or yellow–orange tones with golden luster, depending on value of iron fluence. The nature of beryl coloration was studied by optical absorption, Mssbauer and Rutherford...
4.3 Color Grade(颜色描述) 4.4 comment(注释) 5Origin(产地) 6 Trade Name(特殊商业名称) 7 特殊注释(Special Comment) 祖母绿是含铬和(或)钒的绿柱石,作为五大宝石之一、绿宝石之王,早在公元前330年的古埃及时代,祖母绿就已经是皇家御用珠宝了,后来随着哥伦比亚等地球高品质祖母绿的发掘,迅速在全球各地流行起来...
Natural colorless beryl crystals are colored electrolytically at various coloration temperatures and voltages, which should mainly benefit from the appropriate coloration temperatures and voltages. Characteristic spectral bands of Fe 2+ , Fe 3+ , Cr 3+ impurity ions and Maxixe-type color centers ( CO...
颜色等级(Color Grade):中强(Medium Intense)、净度分级(Clarity Grade):VI1等。 以及在产地(OTIGIN)一栏中,我们还能够知道这颗宝石产于莫桑比克(Mozambique)。 以ALA彩宝专家提供的GUILD祖母绿证书为例: 最上面是证书编号和日期,以确保证书的真实与权威性。下面重要信息如种类(Species):天然绿柱石(Natural Beryl);...
Place of Origin Various Brand Name Ankit Gems & Arts Model Number N/a Gemstone Type Natural Gemstone Color White Gemstone Size All sizes Gemstone Weight Free size Treatments Applied None Optical Special Effects N/A Customize cutstones, beads,etc Usage Healing, Jewellery, etc Product name Goshen...
Amethyst gemstones at mineralminers.com: your on-line link direct to the natural amethyst mines and gemstone lapidary shops for natural color faceted amethyst gemstones of fine quality and flawless rare extra large size amethyst gemstones for collectors.
10.25X8.25X5.50 MM Gemstone Weight 2.68 Carat Treatments Applied NA Optical Special Effects Color Change Item Height 5.50 MM Usage Jewelry Making Material Natural Gemstone Material Shape Oval Cut Color 100% Natural Color Product name Morganite Show more Lead timeCustomizationKnow your supplier ...
Natural color star sapphire gem weighs 6.37 carats Star Sapphire size: 11.2mm x 9.2mm x 5.2mm deepShape: oval cabochon Mined in India Price: $493.68 This cabochon gem of natural black star sapphire shows a very well developed six-rayed star when viewed under incandescent bulb light or unde...
Metal Color: 6mm 6mm 8mm 10mmProduct sellpoints Size: Beads 6-10mm/ 18cm,With beads measuring 6-10mm and a length of 18cm, this bracelet provides a versatile and eye-catching accessory. Design: Smooth Round Shape Beads,Featuring smooth round shape beads, this bracelet offers a comfortable ...
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